How to make scoreborad in tkinter - class

Question

I would like to implement a scoreboard using a tkinter.
and i want make if the distance between the object bullet and the object enemy is less than 10, I want to increase the score by 10.
How do I add code?
Thank you in advance.
from tkinter import *
import time
import random
WIDTH = 800
HEIGHT = 800
class Ball:
def __init__(self, canvas, color, size, x, y, xspeed, yspeed):
self.canvas = canvas
self.color = color
self.size = size
self.x = x
self.y = y
self.xspeed = xspeed
self.yspeed = yspeed
self.id = canvas.create_oval(x, y, x+size, y+size, fill=color)
def move(self):
self.canvas.move(self.id, self.xspeed, self.yspeed)
(x1, y1, x2, y2) = self.canvas.coords(self.id)
(self.x, self.y) = (x1, y1)
if x1 <= 0 or x2 >= WIDTH:
self.xspeed = - self.xspeed
if y1 <= 0 or y2 >= HEIGHT:
self.yspeed = - self.yspeed
bullets = []
def fire(event):
bullets.append(Ball(canvas, "red", 10, 150, 250, 10, 0))
def up(event):
spaceship.yspeed-=1
def down(event):
spaceship.yspeed+=1
window = Tk()
canvas = Canvas(window, width=WIDTH, height=HEIGHT)
canvas.pack()
canvas.bind("<Button-1>", fire)
window.bind("<Up>",up)
window.bind("<Down>",down)
spaceship = Ball(canvas, "green", 100, 100, 200, 0, 0)
enemy = Ball(canvas, "red", 100, 500, 200, 5, 0)
while True:
for bullet in bullets:
bullet.move()
if (bullet.x+bullet.size) >= WIDTH:
canvas.delete(bullet.id)
bullets.remove(bullet)
enemy.move()
spaceship.move()
window.update()
time.sleep(0.03)

Answer 1

There are many ways to improve your program but I will concentrate on the collision aspect only.
Tkinter canvas has several methods; find_closest, find_enclosed and find_overlapping (See here) to allow you to detect where objects are in relation to each other. find_closest would be my first choice.
find_closest should take the x, y coordinates of the 'enemy' and a 'halo distance' (your less than 10 pixels). This will return the id's of objects nearby. If one of those objects is a bullet, then add 10 points to the score.
Some other things to fix/work on
You don't have a tkinter.mainloop. You should
Your method for moving the spaceship by changing the speed rather than the xy coords is poor and ends up with a very fast moving spaceship.